One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,11)(7,12)(8,13)(10,15)(14,16)(17,18,19,22)(20,23,26,30)(21,29,27,25)(24,32,31,28)(1,2,4,6,5,8,11,13)(3,7,10,12,9,14,15,16)(18,22)(23,30)(24,31)(25,29)(1,3)(2,7)(4,10)(5,9)(6,12)(8,14)(11,15)(13,16)(18,23)(20,28)(21,27)(22,30)(24,25)(26,32)(29,31) involution — undirected(3,9)(7,14)(10,15)(12,16) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.